Publications by authors named "Stephen Duffield"

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APPRAISE: A Tool for Appraising Potential for Bias in Real-World Evidence Studies on Medication Effectiveness or Safety.
Katsiaryna Bykov, Ashley Jaksa, Jennifer L Lund, Jessica M Franklin, Cynthia J Girman, Stephen Duffield

Value Health· December 2025

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Letter in Reply - Quality in qualitative evidence: new best practice principles from NICE's real-world evidence framework.
Vandana Ayyar Gupta, Sarah Scott, Mandy Tonkinson, Pall Jonsson, Lesley Goodburn, Stephen Duffield

J Comp Eff Res· December 2025

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An Assessment of the Maturity of Cancer Survival Data Used in Economic Models for the National Institute for Health and Care Excellence's Single Technology Appraisals.
Jiyeon Kang, John Cairns, Nicholas R Latimer, Stephen Duffield, Richard Grieve

Value Health· November 2025

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Estimating per-protocol effects in external comparator analyses using real-world data.
Alind Gupta, Evie Merinopoulou, Stephen J Duffield, Manuel Gomes, Seamus Kent

J Comp Eff Res· November 2025

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Transportability of nonlocal real-world evidence and its relevance to health technology assessment: a primer.
Alind Gupta, Stephen Duffield, Cal Shephard, Eon Ting, Sanjay Popat

J Comp Eff Res· October 2025

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Quality in qualitative evidence: new best practice principles from NICE's real-world evidence framework.
Vandana Ayyar Gupta, Sarah Scott, Mandy Tonkinson, Pall Jonsson, Lesley Goodburn, Stephen Duffield

J Comp Eff Res· July 2025

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Quantitative Bias Analysis for Single-Arm Trials With External Control Arms.
Alind Gupta, Grace Hsu, Seamus Kent, Stephen J Duffield, Evie Merinopoulou

JAMA Netw Open· March 2025

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The Use of Real-World Data for Estimating Relative Treatment Effects in NICE Health Technology Assessment Submissions: A Review.
Yoojung Che, Stephen Duffield, Manuel Gomes

Pharmacoeconomics· February 2025

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Evaluating transportability of overall survival estimates from US to UK populations receiving first-line treatment for advanced non-small cell lung cancer: a retrospective cohort study.
Seamus Kent, Philani Mpofu, Stephen Duffield, Jane Adam, Brennan Beal

BMJ Open· December 2024

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Why is target trial emulation not being used in health technology assessment real-world data submissions?
Alejandra Castanon, Stephen Duffield, Sreeram Ramagopalan, Robert Reynolds

J Comp Eff Res· August 2024

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Quantitative bias analysis for external control arms using real-world data in clinical trials: a primer for clinical researchers.
Kristian Thorlund, Stephen Duffield, Sanjay Popat, Sreeram Ramagopalan, Alind Gupta

J Comp Eff Res· March 2024

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The real-world impact of National Institute for Health and Care Excellence's real-world evidence framework.
Stephen Duffield, Páll Jónsson

J Comp Eff Res· November 2023

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Assessment and diagnosis of the acute hot joint: a systematic review and meta-analysis.
Mrinalini Dey, Mariam Al-Attar, Leticia Peruffo, Ashley Coope, Sizheng Steven Zhao, Stephen Duffield

Rheumatology (Oxford)· May 2023

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The impact of the COVID-19 pandemic on cardiovascular disease prevention and management.
Caroline E Dale, Rohan Takhar, Raymond Carragher, Michail Katsoulis, Fatemeh Torabi, Stephen Duffield

Nat Med· January 2023

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Using primary care data to assess comparative effectiveness and safety of apixaban and rivaroxaban in patients with nonvalvular atrial fibrillation in the UK: an observational cohort study.
Ashley Jaksa, Liza Gibbs, Seamus Kent, Shaun Rowark, Stephen Duffield

BMJ Open· October 2022

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Application of quantitative bias analysis for unmeasured confounding in cost-effectiveness modelling.
Thomas P Leahy, Stephen Duffield, Seamus Kent, Cormac Sammon, Dimitris Tzelis

J Comp Eff Res· August 2022

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The prevalence of comorbidity in rheumatoid arthritis: a systematic review and meta-analysis.
James Hill, Joanna Harrison, Danielle Christian, Janet Reed, Andrew Clegg, Stephen J Duffield

Br J Community Nurs· May 2022

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Systematic review of mental health comorbidities in psoriatic arthritis.
Sizheng Steven Zhao, Natasha Miller, Nicholas Harrison, Stephen J Duffield, Mrinalini Dey

Clin Rheumatol· January 2020

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Comorbidity burden in axial spondyloarthritis: a cluster analysis.
Sizheng Steven Zhao, Helga Radner, Stefan Siebert, Stephen J Duffield, Daniel Thong

Rheumatology (Oxford)· October 2019

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Smoking status and cause-specific discontinuation of tumour necrosis factor inhibitors in axial spondyloarthritis.
Sizheng Steven Zhao, Kazuki Yoshida, Gareth T Jones, David M Hughes, Stephen J Duffield

Arthritis Res Ther· July 2019

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Seasonal variations of Google searches for joint swelling: implications for patient-reported outcomes.
Sizheng Zhao, Stephen J Duffield, David M Hughes

Clin Rheumatol· June 2019

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The prevalence and impact of comorbid fibromyalgia in inflammatory arthritis.
Sizheng Steven Zhao, Stephen J Duffield, Nicola J Goodson

Best Pract Res Clin Rheumatol· June 2019

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Concomitant fibromyalgia complicating chronic inflammatory arthritis: a systematic review and meta-analysis.
Stephen J Duffield, Natasha Miller, Sizheng Zhao, Nicola J Goodson

Rheumatology (Oxford)· August 2018

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The prevalence of depression in axial spondyloarthritis and its association with disease activity: a systematic review and meta-analysis.
Sizheng Zhao, Daniel Thong, Natasha Miller, Stephen J Duffield, David M Hughes

Arthritis Res Ther· July 2018

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Alcohol and disease activity in axial spondyloarthritis: a cross-sectional study.
Sizheng Zhao, Daniel Thong, Stephen J Duffield, David Hughes, Nicola J Goodson

Rheumatol Int· March 2018

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